Housing Authority members have threatened to resign if a no-confidence motion in their boss is passed by legislators next week. One warned of a possible collapse of the authority. It is understood that authority chief Rosanna Wong Yick-ming - who is named in the no-confidence motion along with Director of Housing Tony Miller - has indicated to legislators she would also quit if the vote went against her. The threats raised the stakes in the controversy over the piling scandals which have hit public housing estates. The sponsor of the motion, Democrat Fred Li Wah-ming, believes he has a 60 per cent chance of success. The authority members threatening to quit are members of the building committee, which is responsible for contracts and construction matters. It has borne the brunt of criticism for the piling scandals and other shoddy public-housing work. Its chairman, Daniel Lam Chun, said he would respect the decision of the lawmakers who are 'supposed to represent public opinion'. 'If we do not resign, the political responsibility will be directed at the Chief Executive.' Mr Lam called on lawmakers with a conflict of interest not to vote, naming his predecessor on the committee, Liberal Edward Ho Sing-tin, Liberal Selina Chow Liang Shuk-yee, whose husband Joseph Chow Ming-kuen is a former committee member, and Democrat Lee Wing-tat, also a former committee member. 'They are also responsible for the decisions,' he said. Mr Lam, a building consultant, admitted members had realised 'something was going wrong' a few years ago but said red tape has made it difficult to identify the problems earlier. 'Civil servants have numerous reasons to say no,' he said. Fellow committee member Wan Man-yee said he would also resign and believed other committee members might follow. 'The committee will be left in a vacuum,' he said. Mr Wan said he would raise the issue at the committee's regular meeting today. There are 16 members. Member Ip Kwok-him said there was an 'undercurrent' of support for resignations if the motion was approved at the Legco sitting beginning on Monday, the last in its current session. He warned of a collapse of the authority if all members quit. Mr Ip, of the Democratic Alliance for the Betterment of Hong Kong, said officials including Mr Miller had asked him not to back Mr Li's motion. But he pledged the party's nine lawmakers would stick to their stance and back Mr Li's motion. Non-affiliated legislator and banker Ng Leung-sing, who chairs the authority's commercial property committee, said some members might resign to show they were accountable to the public if the motion was endorsed. Mr Ng said he would vote against Mr Li's motion because it would change the game rules. 'It would set a very worrying precedent if we are to move a motion of no-confidence in the most senior person involved whenever something goes wrong,' he said. 'It's not the case that some people have died [because of the piling scandals] or that a building collapsed . . . it has not yet reached the stage which warrants the imposition of the heaviest sentence.' Financial Secretary Donald Tsang Yam-kuen is understood to have lobbied members on the fringes of yesterday's Legco sitting, arguing it was unfair to criticise Ms Wong and Mr Miller. He said the pair had made the scandals public and sought remedies. The Democratic Party, the Democratic Alliance for the Betterment of Hong Kong and the Liberal Party have said they will vote in favour of the motion. Most non-affiliated members have not indicated their stance. Because of Basic Law rules, the motion must be passed by two groups of legislators - the 30 representing the functional constituencies, and the 30 lawmakers representing the geographical constituencies and the Election Committee. Unionist Lee Kai-ming said he had discussed the motion with the 'breakfast group' of non-affiliated members. They would ask Chief Executive Tung Chee-hwa at tomorrow's question time about what action the Government will take over the housing scandals.